VooDoo Industries VER1K9B Black Exhaust for Yamaha YZF-R1 CNC mandrel bent for perfect fit and finish, master welded, custom designed removable and re-buildable VooDoo baffle, and finished with a laser etched VooDoo logo Utilizes stock head pipe, just remove catalytic converter/stock muffler assembly Mount using welded on mounting bracket and supplied clamp No modifications to frame or bodywork Designed and produced by VooDoo in USA for the demanding custom sport bike enthusiast